It means that if I took this cell and isolated and watched it, I'd notice that it had a couple of characteristics.

意思就是如果我取这些细胞,分离并观察,我会发现它有几个特征

耶鲁公开课 - 生物医学工程探索课程节选

instead of pursuing the questions of how exactly that theory should go, notice that if we had that theory ... we could still evaluate in principle-- whatever the practical difficulties might be-- in principle we could still evaluate rival lives.

我们不去研究,那种理论如何发挥作用，即便我们有那种理论,原则上我们仍然可以-,不管实际困难是什么-,原则上我们仍然可以评价其他生活。

耶鲁公开课 - 死亡课程节选